Black Cave bivy.

Tom Frost, Royal Robbins with Yvon Chouinard hidden underneath in hammocks at a bivy in the Black Cave during the first ascent of the North America Wall, El Capitan, 1964. Incidentally, this was Yvon's first El Cap Route. Photo taken by Chuck Pratt and courtesy of Tom Frost.

Yvon Chouinard demonstrating the lost art of forging pitons. Here he has the stock heating up in the forge.

Shaping the red hot stock for a Lost Arrow piton.

Getting ready to punch out the eye in the piton. The anvil Yvon is using weighs over 120 pounds. Back when he started making pitons he would roll the anvil down the hillside to the beach in order to make pitons at beach and surfing parties. Afterwards he would carry it back up the hillside.